Tank frame



FIG. 1 is an isometric view of the tank frame;

FIG. 2 is a side elevational view thereof, as taken from the back side in FIG. 1;

FIG. 3 is a side elevational view thereof, as taken from the front side in FIG. 1;

FIG. 4 is an end elevational view thereof, as taken from the left end in FIG. 1;

FIG. 5 is an end elevational view thereof, as taken from the right end in FIG. 1;

FIG. 6 is a top view thereof, as taken from the top of FIG. 2; and,

FIG. 7 is a bottom plan view thereof, as taken from the bottom of FIG. 2.

The portions of the tank frame shown in broken lines in the figures form no part of the claimed design. 

The ornamental design for a tank frame, as shown and described. 